Biotech stocks are volatile! The gains can be tremendous and the losses equally so,its not for the faint of heart!If it's that unbearable,,, sell until you can sleep at night.
GTCB is in my opinion a good bet for the next 3 to 5 years. Personally, If I had the extra cash I'd double by current position. If it was a good buy at $1.50 it must be a great buy
at $1.00, there has been NO bad news!
Cheers